Ricerca semantica
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- Year 1952, n° US-2774332, applied in 1956, by Ivan D. Tefft. Fountain pens.
- Year 1953, n° US-2782763, applied in 1957, by Harlan H. Zodtner. Fountain pens.
- Year 1954, n° US-2802450, applied in 1957, by Frederick R. Wittnebert. Fountain pens.
- Year 1956, n° US-2871823, applied in 1959, by Marlin S. Baker. Fountain pen.
- Year 1952, n° US-2888908, applied in 1959, by Robert W. Randolph. Fountain pen.
- Year 1951, n° US-2889810, applied in 1959, by Robert W. Randolph. Fountain pen.
- Year 1952, n° US-2905148, applied in 1959, by Marlin S. Baker. Fountain pen.
- Year 1953, n° US-2916013, applied in 1959, by Nolan Kent Rhoades, Marlin S. Baker. Receptacle for receiving and enclosing the writing end of a fountain pen.
- Year 1959, n° US-2935044, applied in 1960, by Frederick R. Wittnebert et al. Fountain pen.
- Year 1957, n° US-2979030, applied in 1961, by William J. Harrington. Writing instruments.
- Year 1961, n° US-3038506, applied in 1962, by Robert L. Kuranz. Filler device for fountain pens.
- Year 1959, n° US-3087464, applied in 1963, by Frederick R. Wittnebert, Clemens A. Sonntag. Modular fountain pen.
- Year 1960, n° US-3134362, applied in 1964, by Homer T. Green. Fountain pen.
- Year 1960, n° US-3154055, applied in 1964, by Ray A. Lawton. Fountain pen.
- Year 1888, n° US-416944, applied in 1889, by George S. Parker. Fountain pen.
- Year 1889, n° US-423804, applied in 1890, by George S. Parker. Fountain-pen.
- Year 1890, n° US-455023, applied in 1891, by George S. Parker. Fountain-pen.
- Year 1892, n° US-510439, applied in 1893, by George S. Parker. Fountain-pen.
- Year 1893, n° US-512319, applied in 1894, by George S. Parker. Fountain-pen.
- Year 1897, n° US-606231, applied in 1898, by George S. Parker. Fountain-pen.
- Year 1898, n° US-622256, applied in 1899, by George S. Parker. Fountain-pen.
- Year 1899, n° US-629519, applied in 1899, by Stephen J. Meyerpeter. Fountain-pen.
- Year 1899, n° US-635700, applied in 1899, by George S. Parker. Fountain-pen.
- Year 1899, n° US-642151, applied in 1900, by George S. Parker. Fountain-pen.
- Year 1900, n° US-653818, applied in 1900, by George S. Parker. Fountain-pen.
- Year 1903, n° US-758930, applied in 1904, by George S. Parker. Fountain-pen.
- Year 1904, n° US-778997, applied in 1905, by George S. Parker. Feeder for fountain-pens.
- Year 1904, n° US-787152, applied in 1905, by John T. Davison. Self-filling fountain-pen.
- Year 1905, n° US-791466, applied in 1905, by Edward M. Heylman. Self-filling fountain-pen.
- Year 1906, n° US-854584, applied in 1907, by Arnold Martinelli. Clip or sustaining device for fountain-pens.
- Year 1910, n° US-990288, applied in 1911, by George S. Parker. Fountain-pen.
- Year 1925, n° US-D070575, applied in 1926, by George S. Parker. Design for a pencil.
- Year 1927, n° US-D076794, applied in 1928, by Walter E. Guyot. Design for a support for penholder.
- Year 1929, n° US-D081254, applied in 1930, by Kenneth S. Parker. Design for a fountain pen.
- Year 1931, n° US-D087792, applied in 1932, by Russel C. Parker. Design for a fountain pen.
- Year 1932, n° US-D088821, applied in 1932, by Joseph B. Platt, Ivan D. Tefft. Design for a fountain pen and pencil clip.
- Year 1932, n° US-D089449, applied in 1933, by Russel C. Parker. Design for a fountain pen.
- Year 1932, n° US-D089815, applied in 1933, by Ivan D. Tefft. Design for a fountain pen.
- Year 1936, n° US-D102799, applied in 1937, by Kenneth S. Parker. Design for a fountain pen or other writing implement.
- Year 1936, n° US-D102800, applied in 1937, by Kenneth S. Parker. Design for a fountain pen or other writing implement.
- Year 1936, n° US-D102801, applied in 1937, by Kenneth S. Parker. Design for a fountain pen or other writing implement.
- Year 1937, n° US-D106326, applied in 1937, by Paul M. Ressinger. Design for a fountain pen or similar article.
- Year 1937, n° US-D107708, applied in 1937, by Paul M. Ressinger, Ivan D. Tefft. Design for a fountain pen and pencil clip.
- Year 1939, n° US-D116097, applied in 1939, by Kenneth S. Parker, Marlin S. Baker. Design for a fountain pen.
- Year 1939, n° US-D116098, applied in 1939, by Kenneth S. Parker, Marlin S. Baker. Design for a fountain pen barrel.
- Year 1946, n° US-D146806, applied in 1947, by Laszlo Moholy-Nagy. Fountain pen.
- Year 1952, n° US-D169456, applied in 1953, by Nolan Kent Rhoades. Pocket clip.
- Year 1956, n° US-D179053, applied in 1956, by Marlin S. Baker. Fountain pen.
- Year 1955, n° US-D179425, applied in 1956, by Kenneth S. Parker. Closure cap for a writing instrument.
- Year 1958, n° US-D185581, applied in 1959, by Clemens A. Sonntag, Lauren O. Main. Fountain pen nib.